There are always chorders for that. I use a DIY'd chorder similar to an Infogrip BAT sometimes - I'm much slower and have a higher error rate on it than on my

There are always chorders for that. I use a DIY'd chorder similar to an Infogrip BAT sometimes - I'm much slower and have a higher error rate on it than on my split QWERTY setups (which typically have a trackball sitting between the halves), which see more use, but it's damn alluring.