If you switch back and forth between Festool and non-Festool blades, aren't there problems with matching up the splinter guard on the guide rail? I can see that, if you are a production shop or use the saw in daily remodeling or construction, you would look for a cheaper alternative, but I would think that the Festool blade would last long enough that this wouldn't be an issue for someone who is doing this on the side as a hobby or builds a few pieces of furniture a year. I feel there are enough variables and possible inaccuracies that arise in building furniture, caninets, and even just simple things like birdhouses and shop jigs that I am not interested in introducing any additional variables by using non-Festool bits or blades that might be slightly different in size or tolerances. Just my opinion though.