Before you buy- and frankly, I wouldn't pay more than 25% of MSRP for such a speaker, and it wouldn't be used for finer two channel listening in my system; I would put it to work for HT purposes - be sure that you will not be crowding the front wall with them. If these would be put too close to the front wall it would be disastrous.
If you are seeking to economize and run a speaker dual purpose, I.e. HT and stereo listening, or are trying to avoid having to buy a subwoofer, I can see why you would look at these speakers. If, however, you are only doing fine two channel and are not so concerned about the extreme low frequencies, then you may wish to consider a different design, i.e. without the rear firing drivers. Definitely attempt to hear them if you are not familiar with their sound. :)
Some unsolicited advice which HT fans may ardently disagree with, but might suit you well for stereo listening. Do not buy a speaker for stereo listening merely because it comes with a center channel. I use a cross-brand, i.e. different brand of center channel for HT than my main speakers usually. The point? As I am concerned mostly with spending my time with stereo listening and infrequently do video with those speakers I do not let the center channel dictate the quality of the two main speakers! If I'm listening nearly always to stereo, then those speakers will be premium, and the center channel, even if different brand, will potentially be serviceable. The Legacy Audio Silver Screen I have is quite beyond serviceable, but it does not reside in the territory of some of the main speakers I use.
To the point; I advise not to buy a set of speakers just because they have a center speaker. Buy the speakers you love for stereo listening, then add a center speaker. However, if you are in love with HT and will use the set of three continually, you may decide differently. :)