I've been carrying a LW Manix for a long time. First the BD-1 and now the S110V. They have both gone through a lot of use and abuse. They've been dropped, stepped on and the BD-1 was run over by my UTV in the gravel. Both handles have endured (the BD-1 has some scratches from the UTV incident) and have not cracked or deformed in any way. Nor would I expect them to. The materials are impressive.
The S110V is FRN (fiberglass-reinforced nylon) and the BD-1 is FRCP (Fiberglass reinforced co polymer). Both have a slight amount of give which is actually good. They flex a bit rather than crack. But with this minimal flex is also an amazing amount of strength. It is extremely sturdy and solid. I would expect some of my G10 or natural material handles to give long before the LW handles on either Manix.
Just opinion, of course. But I like the material on both knives and am very impressed with the strength to weight that these materials have.
I'd easily recommend the Manix LW. Until recently it was far and away my favorite EDC. My Yojimbo 2 pushed it into second place, but it is a very fine, very usable knife. Add the S110V and a reasonable price tag, and the Manix 2 is very, very hard to beat.