I have always asked for residency proof, and or a deposit in advance.
I have this explained on my profile, and also stipulate this upfront before going ahead with arrangements.
I have not been laughed at and never had a problem, never had a TW yet.
Yes I did have a lot more problems with incalls, and after a long time did bring in a deposit system for that, which then worked really well for me.
My outcall procedure has also helped me dodge a couple of well known TWs and dangerous punters. I've also read about instances of independents and agencies who do not make such checkes, turning up to find the man not at the property, hiding around the corner or pretending they didn't make the booking. That's ok if you are ok with having your time wasted.
Gut feeling doesn't work for me even after a very long time, I've been wrong about genuine sounding men, and wrong about TW sounding clients.
Some genuine men cancel or don't turn up through genuine nerves, and my experience is that the checks give them more of a sense of commitment.
It's not foolproof but works for me, so I won't be changing what I do.