Ended up trying this place after debating with myself about Roti Hut for a long while. Got two doubles and a boneless goat roti so share between my +1 and myself. The double are absolutely delicious. Sweet, spicy, soft and sloppy - an absolute flavour explosion from first to last bite. At $2 a pop, definitely worth getting.
The roti was quite large and well sauced (I prefer my roti on the saucier side to avoid getting dry mouth) as well with good flavour. Not spicy per se but lots of curry flavour. I found that some pieces of the goat were a little on the lean/chewy side, but some others were melt in your mouth. It really depends on the particular piece of goat that you bite into. Personally, I would have preferred a little more consistency between pieces of meat, but overall it's pretty tasty. I probably wouldn't get the boneless goat roti again - not saying that it wasn't good, but I'd like to try some of the other selections on the menu instead.