Where to start...strange little PA speakers, certainly looks weren't top priority when it came to design. The speakers themselves would be handy for a solo acoustic artist, perhaps just running an electro acoustic and a mic. Having said that you may get away in an acoustic duo if you're happy with a "toppy" PA sound.
I used them in conjunction with a pair of Thomann Box Subs, that combination definitely works although you end up with even more top coming from the 110's.
One solution is to run the 110's full range and then run the subs independently, that way I believe you get a better "full range" sound. Using this setup, combination, the PA can easily handle most things.
One disadvantage I found was the tops are not too stable using a pole between the sub and the top speaker and to be honest the prospect of carrying traditional speaker stands does not appeal.
Hopefully you wont be playing too many gigs with an unruly audience.
On the downside a few diaphragms were blown but happy to say, Thomann were great in sorting that out...great customer service Thomann. I'm delighted to say that even in these days of recession our "home based" music stores don't seem to want to work with their customer especially over carriage costs. I'm still amazed that Thomann can still send gear to me for only 10 euro, or free if I have a big order. Well done Thomann!