Leather bag from Silent by Damir Doma in washed cow leather. Small top pocket inside. Holds any MBP etc. Straps have been customized to a fixed position, but can easily be altered back to normal. Fits all sizes.
+ pp fees
30 EUR world wide w. tracking
Dude, pick what you like. Don't mind the quality - it's good no matter what. I had both Carpe and Guidi derbies in the past. Sold both but now have a pair of 992s coming my way from Hide-m. They sure are the more comfortable choice.
It all depends on the leather. I have 41 (my normal size) backzip in baby calf and those fit tts or maybe even half a size bigger. So with horse I would definitely say go tts if they fit - even if very snug.