Moki knives are excellent. I have one of the 433's in 'Crimson' jigged bone, and it's beautiful. Don't know whether it's smaller or lighter than a GEC (don't have one), but the Mokis are 100% stainless construction (liners, spacer, bolsters, pins). The bolster is a longer, extended one (1-1/8" on the 433), such as seen in a barlow-style folder. So, 'robustness' isn't an issue anyway, even if it may be be a bit slimmer/sleeker than the GEC knives. Very solid and tight, with lockup like a bank vault door and a perfectly seamless transition between blade tang and lockbar. And the factory edge on mine was probably the best I've seen on any production knife (it bit me, straight out of the box on the 1st day). Beautiful swedging to a perfectly-ground, wicked-pointy tip. The VG-10 on these is first rate.
Added 'bonuses' with Moki: the liners and spacer/lockbar are fully finished on the inside as well, and the Moki knives come in a beautiful slipcase/belt pouch. Mine is sort of a heavy, almost denim-like fabric with glove-leather lining inside. Great value for the money spent.