It won't get loud enough for most applications. They do sound nice, though.
I've been using Community CPL-23 boxes for years for fills, corporate and distributed (party, fashion-show type) It gets plenty loud enough and it was only recently that I took one apart to find it had just a dome tweeter!
It still projects vocals fairly well, however I've re-evaluated how hard I ever want to push them though.
(It is an install box but comes stock with a U-bracket and I had the speak-on connector added)
For primary PA I once used 16 of them along a truss over a catwalk for a celebrity fashion show because the client didn't want to see PA boxes and the tent we were using couldn't handle our normal boxes. Normally though they are always augmenting a "real" PA
Another dome-tweeter box I was always happy with was the Ramsa 80. Would probably be using them instead of the CPL's if they still made them.
For a more robust small box I like the coax 8" Radian driver either in their box or in my custom-built ones