So far I've only heard of bgc in the bay using it.
Personally I think urcleared footprint is very small and they do ask privacy exposing questions, if I'm to trust fellow mongers reports. This makes me uncomfortable, personally.
The funny thing about BGC is that historically they are not a hard org to get in with just refs.
In other words, if you care about your privacy, should be easier way to get in. If they are adamant about urcleared, imo (and it's my speculation) something is weird with your phone/name. Maybe you're a newbie or they are not trusting your references.
Personally I would never give LSC my work/DL info and I certainly would never go through with a third party tool of shady origin like urcleared as long as it requires any pii info. Tbh in this situation Id trust the org over such third party service. If they sell your info it will be to only other orgs as part of client list deals. Who knows whom a third party site like that can sell it to.
But that's just me. My safety and my anonymity mean too much. Sorry I went through a long-winded post again. In short, I haven't seen anything about urcleared to suggest it's a reputable site, but I also haven't heard anything to suggest otherwise. Still, it's a questionable small site and you don't want to give those your pii imo.
Just my two cents.