I have seen these bikes in the flesh and I don’t think they were overly heavy. If they are heavier than Surly Soma then I wouldn’t say it was by much.
As others say they seem well spec’d for the money. A mate of mine has one and raves about it. He bought a suspension fork for trail riding because I imagine it probably acts a bit like a pogo stick through the rough stuff, especially unloaded. I think it’s a pretty stiff steel fork.
The GX level stuff works well although the X7/GX rear derailleur linkages do develop play fairly quickly—an upgrade to an X9 RD is pretty cheap tho’. I also found the Formula hubs don’t have great bearing sealing, meaning you wear out bearings more quickly than better on better quality hubs. And the ones I had had a weird sealed bearing cone rather than pressfit end caps. This makes freehub maintenance a pain.
But yeah for a grand they look great! Do it!