Ya the build up can be a problem, but it is highly dependent on what you burn. There are plenty of ways to treat this too, I am sure the guy selling you the stove can tell you more.
It does not look like the one you linked in a fireplace insert though. If you are using it instead of your fireplace you can get some nice inserts with the fans and all built in and some can look really nice - read look and cost expensive.
My inlaws heat their basement with a wood stove and it does a great job with little fuss and mess. My father-in-law is great about upkeep on things though. They have screw vent which I think are a little sturdier than the sliding vent that one shows but does the same thing. Theirs is a stand alone and this Thanksgiving they set 2 pots of veggies on top to cook while she did the rest in the kitchen.