If you are doing strips for canoe building, then you have the strong back already, that means no infeed/outfeed tables, no double length work area .... if you compare the cost of making your own strips for just 1 canoe, you can likely buy a saw with the difference. I have no idea of the Festool cost, but I know that when I looked at cost, I could pay myself, buy the planer, router and bits and still have money left over.
I have never regretted buying good tools, but just be sure you do your home work and know exactly why you are buying that better tool.
I have done strips with a bigger saw and with the circular saw, it was mentioned that the blade width difference wasn't much ... that needs to be multiplied out for the entire run of strips, it starts to add up, fast.
Even if I had the space, there is no way I would use a table saw (now anyway) to do strips, Using a circular saw method (for me) is faster, more efficient and easier ... by a long ways .... again, this is just IMO
Brian