I don't have one. That being said, I want one! There are many times that I try to make everything for dinner on the grill. It's very tight trying to make 2 sides and a main course for 3/4 in a 22! I'm sure the pros out weigh the cons ten fold.
The sooner you get one the sooner you will be asking why it took you so long. IMO
UDS (not so U) UDD, 22.5 OTS, Coming soon: mini UDS & double barreled RFS