I see no problem with downing rounds. If you get restrained and left in the middle of nowhere just log off, I don't think any admin will ban you if you logged off after being left in a random house just because you didn't wait 10 minutes.
The whole point of having to wait 1 minute to get out of the down stage is so you can get restrained. Imagine downing someone, and then when you go to restrained him he get up and shoots you. Would not be fun. And if you say it's loo long, when you die you lose alot more time then the 1 minute you were downed for, so I see no problem.