Don't tease him by letting him use that Oehler!
I picked up a Chrony Alpha years ago thinking one day I'd have enough for an Oehler. It was cheap, easy to use, parts were readily available (I've ... ah, made a couple mistakes with it), and I guess I never really thought of replacing it since. Like NM says, "not sure why." I haven't used it to check an arrow's velocity, but have used it for everything from 650 fps .177 pellets to 4200 fps .22-250s.