I've got the older version of the 255mm in my garage and have been using it for 4-5 years now and find it the most useful tool in the garage. It's semi-permanently set up and I find myself using it regularly.
It depends on the level of accuracy you need. The less accurate part if the vertical angle which is easy to get right for a 90 degree cut using an engineers set square but less accurate when trying to get it on a set angle. For general use on skirting/decking/cabinet making mine is easily accurate enough for general use.
As an example this is the most recent project I used it on (not quite finished!):