Well going back to my original reply I stated I tried a search on the topic without much luck. But since then the topic has kinda wandered a bit which I have no compaints about, but infact welcome the other comments mixed in.
But anyhows, I carry a Saber on me everyday at work and I don't have many complaints. I've also carried System saber with the secure module (reliatively same size as a AS3) as well as Jedi series Ht1000/Mt2000's. In terms of weight advantage, I think it's pretty much even. I haven't tried to weigh either yet but I have yet to notice my pants hanging any "lower" because of one. I do have a few pet peeves about the sabers:
They are susceptable to cellular interference and you can hear it while someone is on a cell nearby. Also I have found that Jedi's aren't susceptable to the same interferance but at the same time have just a slight but noticable less "lag" to hit repeaters. But otherwise if you trying for the "concealed" look, it's what you make of it. I can stick a saber in my back pocket and with a long shirt can easily cover it up. The sabers fit quite nicely in your back pocket, not that I can say the same for Jedi sized ones. And you can go back an forth between the two of them forever.
Going back to my main post, all I was really concerned about is if I upgraded to a AS3 vs XTS is whether the AS3 would become obsolete or incompatable with emerging technologies. Sure obviously newer radios will have newer technologies & features but it comes down to: will it still be worthwhile? Of course a few other things come to mind, which can take a better beating blah blah blah. FDNY has been beating the snot out of their sabers for quite a few years yet they still go back to them. They haven't seen the need to upgrade to the Jedi series. Only in recent light they forsee a need for a radio with multiple channels/options hence the current available XTS series. Yet I have heard some issues they have had with the radios: The volume knob is easily damaged/destroyed, the emergency button is woefully undersized for fire work or inaccesable etc., etc., etc.
So mebe this boils down to preference and I'm just plain asking who likes what for what I guess. Is that such a bad thing? Isn't what this whole board is kind of based on?
-chrisC