Curious, how do YOU check valve guides with the "wiggle" test?

guides are only 1/2 the equation. Sure the guides need to be straight, & round w/no taper, but the valve stems need to be straight, round w/no taper, too.
I use my valve grinding pilots to check guide size. I actually have a Chrysler tool, which is kind of a short sleeve to slip over the valve stem before you slide the valve into the guide to hold the valve head off of the seat a set amount to check for wobble like they show in the FSM. I rarely use it, though, because it's only made for stock valves and stock heads, and I feel I have acquired a better feel for what kind of clearance I'm looking for anyway.