The GT-100 should work with any amp. If you strictly want to use the GT-100 for your effects, including distortion, everything should be fine as long as the amp has a good clean channel.

Where it gets tricky is if you want to use the GT-100 for everything BUT distortion and overdrive. In that scenario, you'll want an amp that has an effect loop and connect the GT-100 using the "4 cable method". What this does is it puts your time based effects (reverb, chorus, phaser, delay) between the preamp and power amp rather than in front of the preamp.

The amp you are looking at does not have an effects loop, so I suspect that perhaps that is why it's been suggested that this combination won't work.