I work in a quiet place so I can ping the spokes with the spoke wrench and hear the pitch. 2 or three times per build I place the Park tension meter over several spokes and get a feel for tightness. I have never gone around and "Parked" every spoke. Someone would have to give me a huge gift of patience! If I built wheels more often I would have sufficient memory to remember the final pitch of my last wheel and I'd skip the Park. I do 2-4 wheels/years; not enough.
If at all possible I buy unopened boxes of 100, either Wheelsmith or DT. No need to check spoke lengths. If I do need to check, I just grab a handful and stand them up in my hand on a table. Mismatches aren't hard to find.