Well,
Punching up the performance would make it more attractive, minimally. Personally, it is just too angular and tangly to EDC. The old-style round-bezel 9P I have carries unobtrusively in my RipOffs holster, sitting comfortably on my hip.
I can imagine that the R2H is going to make it a very nice unit. The 5W in the KL5 will make my ol' trusty even moreso, for me.
Now, If I could get someone to put a regulated R2H in my 9P head (either with a narrow Fraen or the stock P9x reflector), I'd jump in a second. Unfortunately, no one I contacted is interested in this job. They've all said "wait for the KL5". And so I am.
Wilkey