bumper wrote:

While I respect your opinion, I'd
like to know what data you're basing it on.

It is generally considered a bad idea to have two instruments which look
the same but have a different meaning. It will work fine as long as
there is no stress present, but the moment there is additional stress,
chances are that the human system breaks down. For illustration, read
the accident report at http://www.bfu.admin.ch/common/pdf/1781_e,
especially paragraph 1.18.2. (Agreed, things were much more complex and
there were many more factors involved, but I think the report is very
enlightning anyway.)

damn near
anything is better than nothing for inadvertent or emergency IMC.

I think nobody will disagree on this.

Stefan