AFAIK, the regular TiVo HD does not, but the newly announced HD XL does.

IMO, the best remote keypads are still created using the conductive membrane instead of individual switches. The Harmony line of remotes, including the 880 use those switches and they feel terrible coupled with hard plastic buttons. Perhaps when coupled with silicone buttons they're better. I'm also finding that my volume+ switch is nearly dead. I don't think fixing it will be as simple as the cleaning required to fix the conductive membrane type.