here is my worry.
two of my most recent backoffs happened right at the start of a session, I was playing for nickles, and used "my" player's card. Fortunately it did not have my correct name, so I don't have that problem yet, but when I bought in and gave the dealer my player's card, within 60 seconds someone was wanting to talk to me.
All I could guess is that my previous session had been noticed, that the eye had gone back over my play, and I had been too careless with my betting, letting them correlate betting with the count. They apparently then left a note on my player's card data for the next time I used it. So this is not a good plan, in general, for that reason. As I said, fortunately it didn't track back to my real name, and after a few months I'll play there again but _not_ with that player's card, which has been destroyed...
In vegas this was never a problem on the strip, as they would not even rate play unless your min bet was $25, so I had zero problems in that regard, but then of course there are generally zero comps at low-limit tables on the strip to go along with that lack of rating information...
It is a case of "do I do it and take a chance? Or do I not do it and play longer with fewer comps." Or there are alternative ways of dealing with player's cards where you can earn comps risk-free. Your imagination is your friend here...
Remember that you don't want the card to come back to _you_...