Very interesting. MEM really believed that XP-G3 will kick ass but than he disappeared.
This is his de domed emitter(yes he even managed to perfectly dedome G3) tint comparison test in reflector light Dedomed LED Tints Compared: XP-G3, XP-G2, XP-L
Or to make it short I will put interesting pics from his thread:
XP-G2 dedeomed
XP-G3 dedomed