Can you explain what you mean by this? I don't understand.
He means that looks crap.
Haha. I think all dual crown forks looks crap but that is just personal opinion.
Gordan, I am also building up an FM10 and, to me at least, that fork has no place on an FM10 or any other bike I own. That is trying to be a full on downhill fork, it may even have succeeded, I don't know. That fork is heavy, has too much travel for an FM10 and is more than likely over engineered for the type of riding someone owning an FM10 is likely to be doing.
The term horses for courses refers to using the right equipment for the right job. You wouldn't put a draft horse into a sprint race and nor would you try to haul a beer lorry with a young sprint horse.
I have picked up a second hand Rhythm 150mm 27.5 fork to use on my build. I am confident it will fit the +tyres but I do think my axle to crown height will be lower than optimal. IE, I will have steepened both seat and head angle and dropped the BB height marginally. If it doesn't work then I will possibly get a crown race spacer thanks to Guitsboys suggestion, until I can find a 29er in my price range. You could look at picking up a second hand fork or something along the lines of a new RS Yaris that are getting good reviews as a budget fork.
Hope all that makes sense, feel free to ask if not.
As I said, if Himalo made a 150mm travel 29er or a 160mm travel 27.5 that had thicker than 32mm uppers, was boost spaced and had a 15mm thru axle then I would have tried one, but they don't and the fork linked above isn't a substitute for one.