I have gotten a chance to play with some of the TrixBrix switches, and can't say that I was overly impressed. The technique of assembling the slider mechanism is fairly clever, however, it introduces a problem where the slider over-travels and thus stops beyond the natural open or closed position. Not really a problem in operations, but I suspect stresses the printed spring mechanism, and likely results in the higher tension on the point others have observed.
The surface finish was as expected. Clutch power on the studs was hit and miss, but overall not terrible. Bottom clutch, however, was non-existent. The ties are oversized, which actually kinda works because you can just wedge plates in between and call it ballasted, but I don't believe this is intentional. I've said my piece on printed tracks before, and I haven't changed my mind: works for prototyping or as a stop-gap, but not as a permanent solution.
The track gap Tony shows is typical for doing a siding like that, but if you wanted to turn out in a circle, you'd have a bigger problem where the curves interfere by as much as that gap is, so you would really have to stress your tracks to fit the curve properly. Their geometry is really only conducive to crossovers.
As for the BrickTracks switches, it'll be sooner than you think. I could say when, but that would ruin the surprise.