Originally Posted by
grumpus
Sure there is - sometimes it's too much effort to downshift the front and upshift the back, if you're not going to cross-chain for long just use the forbidden ratio. It's likely going to wear your transmission faster, drag more and maybe make noise, so don't make a habit of it, but occasionally there's no great harm.
Sorry...I should have said there's simply no
good reason to do it. Being too lazy isn't one of them.
But of course, you're correct--momentarily doing something wrong isn't going to ruin things--but will result in the effects the OP has brought up. If he doesn't want those effects, most of us know what the solution to that problem is.