It would, Tom, but I have a hard time getting past the price. I can buy a lot of 1x3 and 2x3 material for the $1,000+ Mianne would cost for my meager 16'x16' L-shaped layout. And although can't stand for more than about 30 minutes to do things like trim bushes with the trimmer, cutting wood on the ShopSmith, etc., isn't as problematic because I'm not bending over in the same way. Plus I'm hoping my therapy and followup exercising will help with that as my back gets stronger.
This probably won't make much sense, but my construction is going to be pretty simple too. There will be 12 modules that are 24" wide and 36" deep. Two of these will have extended rails, a 60" on one side and a 48" on the other side, to support the O54 reversing loops on each leg of the "L". It will take one of these and 5 other modules to make each 12' leg of the "L". At the apex, there will be an angled cross-section to connect the 2 legs and it will be removable for annual access to the water heater in that corner of the garage. It's not ideal, but it'll be better than the RealTrax oval floor layout in the craft room.
And since this is a garage layout in Phoenix that will be pretty much just track, I'm not sure I want to spend the money on Mianne. I know 1x3s will hold up to the weather because I had a temp 6x10 table layout using 1x3's with 2x4 legs in the garage for over 2 years.