I've tried them just to see if they bring anything extra to a rod than a KR Concept guides system and find out that the only extra thing was extra weight. In my opinion, they were design to achieve the same performance as a KR concept system but in a slightly different way and with less headache for the rod builder while placing them. For a beginner in rod building, they are a more convenient option but , for an experienced one, in my opinion Fuji's system is better because it is more flexible in design with less weight. Specially when you build finesse jigging rods for walleye and crappie I find Microwave to be too big and too heavy for the job.
The only threat to Fuji's supremacy when we talk about guides, in my opinion might be the similar system offered by Seaguide which have better pricing and a wider range of frame -insert combinations. I said might be because I am about to test some soon so don't really know the quality yet.
Like I said I've only cast them a couple times, I've never had a chance to fish with them.
Mostly I'm building. Offshore, Surf and 8' - 9' Shore Rods.
Spinning & Conventional Rods (Conventional is like a really beefed up Leverdrag bait casting Rod for you bass guys)
Conventionals (baitcasters) are all being requested Spiral Wrapped now
Offshore Rods I've been using ATC: Virtus, RingLock. W/NanoLite or DuraLite, Rings.
Jaws Rod Blanks: I believe they make lite weight finesse Blanks,
Carbon Fiber, Rod Blanks W/Nano Silica Resin,
are not new but the Carbon Nano rods are quite amazing.
Look up the strength tests on n YouTube!
Look into Aventik Carbon Nano Blanks.
I built a 14' 10/11 weight for a guy, fly fishing for big Tarpon & Sailfish in the keys.
I'm not a fly fisherman, But he says its lite & he likes it.
Thanks for the info about microwave guides.
I don't build finesse Rods cause I import Japanese carbon nano finesse rods.
It wouldn't serve my purpose to not use what I'm selling.
I couldn't build them much if any cheaper myself.