That's actually exactly what I did. Still, I had to look for the sharpie (magic marker) every time I picked it up, which is a waste of time. Much easier to grab the right size wrench, without having to find the slot marked with magic marker. Like I mentioned, the wrench does work, it just not the one I would grab to do a wheel....
I've done 3 wheels to date, and they were all checked at about 50 miles, with no corrections necessary. If I see or feel anything curious (like some kind of bobble for instance) I'll check them again then. The one bike, powered by the big Bafang Ultra with 160nm, is a good example of a wheel that you might expect some problems with - yet it's running as straight as the day I installed it. I attribute this to the fact that each spoke was final tuned with a tension meter.
My only point is that the smoke and mirrors related to wheel building are just that.