I got my groomsmen leathermen Juices. different ones for each of them. They're a good size, small enough to carry without a holster (holsters are available on amazon for pretty cheap) Alternative is to get the tiny keychain one.
Made the mistake of talking to the wrong person at the jeweler. Aparently the anodized aluminum can't be diamond scribed (makes sense, I didn't think about it) so if you do spring the extra few bucks for personalization, make sure that they're laser etched.