Very interesting to see a modern GT in that they kept that GT frame tradition thatg under the seat and connects to the top tube.
GT has kept the "Triple Triangle" design on many of their hybrids and hardtail MTBs.
When you flip your bars over, you will likely have to raise your stem a bit - hope it works out for you. I almost ditched them and was set to go back to bar ends, but tried them inverted again, played with the angle and spacers on the stem; slightly more level than the first try - also moved levers outward and trimmed off excess inner flat area to decrease flexing (although a little flex seems to absorb bumps/vibrations).