Okay, so I just got the main idea of this thread and I need to add my .02:
When it comes to voice calls over my phone--I use google voice and it forwards to my regular cell phone so no big deal with calling from blocked, number is masked anyway. However, I do prefer initial contact to be text, PM or email SIMPLY because I do NOT sit around my apartment, hotel, wherever waiting to be called by someone trying to set an appointment. Like most human beings (what a shocker), I am typically out with friends, at dinner with family, or otherwise in a public area where I will be unable to talk freely, thus making any type of voice conversation futile. I do not speak in code, or any of that other nonsense.
However, if you do the text, email, PM, whatever, and I have done my end of the screening to set up an appointment (which, depending on if I'm near a computer or not [can't access ECCIE from my cell network connection], should typically take about ten, fifteen minutes if I'm near a computer, or possibly an hour, two hours if I'm not [mostly to finish up what I'm doing and get home to the computer].) then the typical, when, what time, how long correspondences and then done. I usually request that you inform me when on your way and I'll disclose my exact location (address) but will not give room or apartment number until you do get here. If you meet at my private incall, I request that you meet me outside in the parking lot, for hotel, when you arrive, I give room number and meet you at the door.
What I will not even dignify with ANY response (Please excuse any improper or "bad" TCB skills) is when I am asked to discuss rates or activities, which sometimes I will say "won't discuss" and then leave it at that. Any good hobbyist should know that most, if not all, providers do not or will not discuss that sort of thing. It is and should be listed in our ads, showcases and if we have it, P411 ads/listings as well.
But I digress....what I would like to add, is that if you would like to have a voice call, after I have screened and we have at least exchanged a handful of correspondences, you can always request a quick (meaning, no more than 5 minutes) call to verify that it IS me, (I can even SKYPE!) and I would be more than happy to let you know if I'm where I can talk freely or give you a call when I can talk.
It has taken a couple months for me to develop my way of setting up appointments, but it is very comfortable for me, especially since it helps weed out the "bad eggs" of the hobbyists and keep my business running smoothly. It also helps ensure my safety as well.
Hope this at least adds some insight as to our end, though most of you who have been around a lot longer than I should know these things already.