i think you would find that the new Inova T1 would fit the bill
1.5W luxeon
Single CR123
Tail click switch
Uniform diameter

See the Inova Tactical Torches here

It's a great little light. Super bright. I love it.....until someone stole it.... <img src="/images/graemlins/mad.gif" alt="" /> <img src="/images/graemlins/mad.gif" alt="" /> <img src="/images/graemlins/mad.gif" alt="" />