keyboard with Dvorak-Qwerty switch (& ctrl-cap lock)

[FinancialWar]

Apart from the WASD keyboard, are there any other keyboard on the market with built-in Dvorak-Qwerty switch? Even better also with ctrl-caplock switch too?

[davkol]

Kinesis Advantage supports both DSK and QWERTY, and can be remapped on the fly.
TypeMatrix 2030 supports both DSK and Colemak apart from QWERTY; it has two-row Shift keys, and Caps Lock in a completely different spot.
Programmable keyboards are programmable.

[orihalcon]

You can have any PS/2 compatible keyboard switch back and forth with a Soarer's converter using the ifselect command. Set up a key combination to activate the select layer and it will completely change the layout until that combination is pressed again. Even works with USB boards that are backwards compatible with PS/2, so most modern mechanical boards really. I have prebuilt ones available, but you can make them yourself as well.  You can also remap Caps lock to control or whatever else you want.