John, I hear ya. I am an experienced martial artist too and train in the sword and knife arts regularly in addition to the hard and soft styles (all Korean arts that have sister arts in the Chinese and Japanese styles). Since my HI journey began a couple of years ago, I've searched for the blade that I can take to the dojang and practice with regularly (when no one is around with a live blade).
I started with a 16-inch Siru by Vim that I really liked. However, the weight distribution is noticeably forward with that piece and it feels like swinging a little hammer or axe after a while. Of course, knowing that, I have modified my techniques to take advantage of that aspect of the blade (lots of chopping/slashing and downward circular motion that would let gravity help my arm and aid my swings). Then I discovered the 15-inch Katunje. It feels great as a martial blade, has less of a forward weight balance, and feels much more like an extension of my arm. I went to the Katunje as my go-to blade. And then, after several months, I was lucky enough to acquire a 14-inch BDC. I did not expect it to perform as such initially, but after handling it and performing several short forms and techniques with it, I can definitively say that it has the best weapon-like characteristic of all my HI collection. It's balanced excellently (almost does not feel like a khukuri) but due to its HI-trademarked thickness, would be a monster of a chopper as well. So, I found my calling in the BDC.
Perhaps my BDC just has the right balance that I'm looking for, but I would suggest that you give it a try as well. The BDC tends to sell inexpensively and the fullers are gorgeous to look at. If funds permit, I would also pick up a Katunje (Auntie Yangdu's signature knife) too as it has a very unique spine and beautiful patterns on the blade, and just also a great all-around blade to handle.
Just some thoughts on alternatives to the Siru. Like you, the Siru was my first go-to blade and I still love it. The Katunje and BDC called out my name along the journey.