Absolutely. Channel all the time. Got plenty of authorized witnesses to that. Happily, I did no such thing at Nationals this weekend, but I'd have been in good company if I had. And some of those good folk didn't take it too well--definitely weren't paying attention to the "No play outside 5!"
Only fun channel story I have is the Invasion rolled out of the channel (overthrown) and carry right through the pocket as if 0 was the breakpoint. No bounce up and down onto the lane--no noise--just roll in and right out. Just appeared to have shrugged it off.
Nowadays, I do incorporate finding out of bounds during practice, and given that I'm still learning twig play I expect to channel like it's my job.
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HG: 300 | HS: 768
My BowlSKStorm VG, Invasion, Natural, Prodigy, Fast, RG Cell Pearl, Steelers Plastic = #15