I have run and ridden with a Camelback and it works OK, the only problem I had with it was that it creates a hot spot on your back. Having that extra bulk and insulation on your back really heats that spot up.
What I like to do is put the Camelback on my son who rides his bike with me when I run.
Since the distances are not that great, it doesn't seem like much of an issue for him. I get someone to talk with and encourage me, plus I have plenty to drink for the longer runs.
The first time you do something - It's going to be a personal record!