I would never initiate a deal, but if asked I would always consider it. When I played live games at my local Pub, we often played a cash game after playing the League game and although it was illegal I would often spend the time sorting out the chips for the next League game, as we played with different set of chips for cash and as Tournament Director could not be seen to be breaking the Law(some times I did)
But if I was heads up on the final table and the player I was up against wanted to get into the action at the Cash Table I would agree on a deal so he could play and then I had more time to re-stack the chips for the following week.
You have to understand I never really played for the money, It was always for the League points and winning the League to go on to the Regional Finals, Money always came 2nd. I think the only time I wouldn't agree to a deal was when I had a massive lead over my opponent and he asked for a deal, but I said "you have to be joking, I have 20 times more chips than you and you never sit down at the cash table, Play on, I will call your bet with any two cards"
He then pushed all in with A/K and I called blind, with 6/2 the 2 paired on the river and I took 1st place.
The guy (a regular) never came back?
When the fun Stops, STOP!