To the OP: I'm waiting on delivery of the Arsat 80 2.8 T/S (may be here today). I can't comment on the 35mm T/S, but a couple of things to keep in mind in general with these lenses (you may already be aware but for anyone else considering them): 1) obviously manual focus only, but also no AF confirmation (Canon's T/S lenses will give you the AF confirm beep/ flash); 2) more importantly, only manual aperture settings. On the surface perhaps not a big deal. But if you're shooting indoors and are stopping the lens down, the viewfinder will be very dark. EOS lenses are at wide-open aperture until the shutter button is fully pressed. Then they electronically stop down to the selected aperture. This means a reasonably bright viewfinder image.
For the ARAX (or any other manual aperture lens) under less than very bright light, you'll need to manually open the lens to 2.8, focus using the viewfinder/Live View, then stop down manually before taking your shot. Hopefully not too big a deal, but something for studio/product photographers to keep in mind using these lenses. (Outdoor daylight shooting should be less of an issue.)