We recently got a very interesting loom in as a trade-in. I'd never seen anything like it, so thought I'd write a little bit about it. This very innovative loom is built by Northwest Looms in Wyoming. It has "open heddles" and an open reed. The threading is from the top of the heddle, just slide your warp in from the top. In the picture below, the reed/beater is resting on the front beam. The wooden levers on the right side raise the harnesses. The levers are graduated in length to make it easy to find the harness you want.
The front beam will slide forward so you can put the warping peg segments in, and then warp directly from there. I think it's a fascinating little loom! And with 8 harnesses, your patterning possibilities are huge! This would be a great loom to tote to workshops.