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but they've saved my career (see below). I use one on my left, affected side all the time (including sleeping) except for when showering, etc. And then I use a Velcro strap type (unknown brand, got it during physical therapy) for when pushing grocery carts or heavy lifting.
You may want something even more supportive and rigid for when not typing, but I find my Velcro splint too bulky for work. The SoftFlex are just right for that for me.
(You can buy singles instead of a pair here): http://store.ergoguys.com/softflexsingle.html