I have an HW100, Carbine laminate in .22. No personal experience with the HW110, but my impression is consistent with what is stated above. The HW100 has been totally solid, accurate, no problems. Hammer spring easily accessed for fine tuning. Not a lot of power or shot count, but a typically German engineered rifle, lots of steel and a great trigger. Also typical, a rather complex design, with several areas of potential seal leaks, but mine has been perfect. Replacing the breech O ring almost requires that the receiver be disassembled, just separating the 2 main modules. Guess that's the cost of having what I consider the best magazine design in the market, but includes a very small breech opening.
I think it could be a decent HFT rifle in .177. Only the laminate has adjustable comb, which is a feature I always want.