You think bait and switch is the biggest worry? That is really low on the list of thinned that can go wrong during TOFTT. Just above having a bad session with a hot gal. Bigger worries are getting robbed, getting drugged, betting beat up by pimps, going to jail, etc.
As to your idea of asking for face pics, sure some guys do that, and a small number of providers will comply, but the majority will just cut off communication with you. Even the few that might comply, how do you know the picture is accurate? (Read Voo-doo's post above.)
"I don't see why they are all so afteaid of face pics?" Seriously, dude? Look man we are supposed to be nice on the newbie board, and as the host here, I guess I am supposed to be extra nice, but all I can say to that is "What the fuck are you thinking?" You really can't figure that out? Are you ready to post your face pics all over the Internet and say you are a prostitute? There are tons of really good reasons that providers don't show their face. Not showing their face on ads and then sending face pics to strangers by phone or email defeats that purpose.
Moving on to your last comment about providers self reviewing, of course that is possible and it does happen. That is one reason we tell newbies to see "well-reviewed" providers. One review does not equal "well reviewed." If a lady has 10 reviews with a bunch of them from guys who have written several to many reviews themselves it is a lot less likely that they are self reviews or fake reviews.
I feel for you if you are in an area where there are not a lot of choices. I am in the same boat actually. I do TOFTT occasionally but I have a lot of methods I use to determine the risk. (Asking for their picture is not one of them) and I have 30+ years of experience.
I would suggest you either hobby in a neighboring city where there are more choices of well reviewed ladies, or look for other sites. TER is the largest, and IMO the best review site but it is not the only one, and it is not used in every city. In some areas there are other sites more popular. I can't and won't mention them here, but with research you should be able to find if there is another go to place in your area.
Good luck, but please don't TOFTT yet