Same here, looking for an excuse to use it. It takes some time to get oriented. The BSV fronted makes it easier though. Have been dabbling in it as a hobby on the side.

While there have been tape-outs by universities, I think the learning curve would discourage traditional hardware companies focused on TTM. While bluespec has higher level abstractions, it also provides access to low level HW optimization features like multiple/gated clocks, integrate verilog etc. so I don't see any hindrances.

One needs to be familiar with both using SW abstractions and HW design, which iss a small subset that limits it's usage.