Jack,
I've been using my CED Millenium Chronograph exactly as Paul states for several years. There is so much more to a chrono than muzzle velocity. IMHO after using the CED unit like this for 4-5 years, my handloading without a chronograph would seem crude by comparison.
BTW, I've spoken with Paul Box on the phone several times and corresponded with him via e-mail quite a bit. He is a really sincere and likable guy from my contacts with him.