Once you get into the habit of doing the R1 + [button] shortcut for anything other than moving to the next page in a cycle it's fine. And honestly L2 + R2 would just confuse me more. You only need to hold R1 for a split second, and doing it mid-GCD is the best way to do it. In fact playing a SMN/SCH (especially the latter) you pretty much have to learn it that way or else slow down your effectiveness. Unless you can very quickly and precisely tap R1 the exact number of times to shuffle to the bar you want.