Most ads I read say "Upscale gentleman" only. What exactly does this mean. I talk proper, dress decent meaning I wear my pants on my butt. Is this enough?

How do you guys dress to see these girls? Is a t-shit and jeans OK? Maybe I should upgrade to a golf shirt?

Thats a good question, I have done it twice. First time I was in cargos/white tee.. Second time, I was comming from a meeting so I was looking upscale with button-ups, dress pants and blazer... But I have never really thought about tht

I used to worry about this since I am pretty much a t-shirt and jeans guy myself. Now I figure as long as I am clean, respectful, and bring the correct donation they really shouldn't care what I am wearing.

Totally has nothing to do about how you dress or what you drive. If you are able to meet the price, then driving up in an old VW van is totally cool.

and only see the "finest gentlemen", and they claim that their clients aren't like the typical client and so on and so on.

Well guess what, I emailed them and said I'd like to see them. They said "sure!". I showed up, dropped the envelope, had some fun, and left. Nowhere along the way did they ask if I was an upscale gentleman of the finest caliber who was worthy of seeing them.

I normally wear a t-shirt and jeans, but when I go see a girl I make a bit of an effort and put on a polo shirt. If I dressed like I was going on a date my wife would wonder what was up.

It's like they'd prefer older gentlemen, but the mature provider accepted me...because I am not only younger but a gentleman

"Hey, that's me. I'm an upcale, distinguised gentleman!"

Ladies are looking for hobbyists who can afford to p4p and will not try to negotiate the price.  The ladies want to be treated with respect by a gentleman who practices good hyegiene and is considerate about them.

For me, I will wear business casual except in the hot Florida weather when I will wear nice shorts with a collared shirt.

This just means she wants you to pay well without complaint.  If you pass screening, I can't imagine being turned away because I wasn't dressed well enough.  I do dress as I would for a casual date.  Most often a polo shirt.  If a button down is in character for you then, wear it.  
skb

In warm weather, I wear shorts and a 'Magnum, P.I.' type shirt, and usually flip flops.  In cooler weather, jeans, t-shirt, and maybe a flannel shirt over it, jacket if really necessary.

So far, I have never been told I was not upscale enough to come in and leave my envelope on the table.

Swim

I just found your post to be funny.  Providers are so cute and it's not just the way they look, it's the way they act.

If you act like a gentleman, you have good hygiene and of course you have the correct consideration....they could care less what you're wearing, as long as you look presentable.

Added note: If your going out to dinner, etc. make sure that you dress appropriately. I'll never forget a dinner date I once had. I walked in looking like I was going to a fine dining establishment, which we were. The gentleman, on the other hand, had on gym shorts and a ripped up t-shirt and was smelling ummmm ripe! I asked him if he brought along some clothing for dinner and he said, we could go through his suitcase to see what we could find. He proceeded to place his suitcase on the bed. When he opened it, it looked like the bottom of my kids closet...with clothing waded up. Come on...really? Needless to say, I was totally embarrassed during dinner and felt like crawling under the table...and not to service him either.