Yup. I really struggled as there were a few characters (YHN, and less so, TGB) that I type with both hands on a normal keyboard, but I avidly prefer ergonomic designs. The Microsoft Natural 4000 is my favourite. But I'd love it if the 6TGB and 7YHN were duplicated on both the left and right side.
I picked up the habit by keeping my pointer fingers on the D and H back when F# keys were on the far left, and then GJ or GK after the F# keys moved to the top. I have big hands, long fingers, and can reach the entire keyboard that way, but it kept me going faster when I grabbed a drink.