I don't have a direct experience with Luxman integrated amp, so I cannot say for sure, but from the spec, it will work fine.
Luxman's output is 110WPC on 8 ohm and Gershman is 6 ohm, so Luxman will pump a bit more power (150WPC?) to Gershman.
However, if you have not purchased the Luxman yet, if I were you, I would go for an amp with more power, like 200WPC on 8 ohm.