we've tried it a couple of times but i definitely wouldn't recommend it, there should be better ways to go about whatever the task may be that you're doing.
my main beef with it is, sure, it may be tacky as hell, but the bond is between the primer and the adhesive on the vinyl, if the vinyl isn't installed properly it will fail whether or not there is primer as the bond between the primer and adhesive becomes stronger than the bond between the adhesive and the vinyl.
only two scenarios that I've seen when the vinyl fails;
one: there was no primer used and the vinyl and adhesive come away from the recess.
two: there was primer used and the vinyl comes away from the adhesive, which has bonded (well) to the primer; and now you have to clean it all off to replace.
I would focus on technique of installation rather than primers and the like.