Is it possible to build multiple custom Excel toolbars and completely remove
the ribbon?

Before anyone tells me 'try it - you may like it!', please read the following:

In my company, we use Excel as a meeting facilitation tool, and have built a
customized workbook complete with templates we use while conducting
workshops. This allows us to conduct very fluid workshops with real-time
on-screen data capture, and to provide our customers with Excel-based
workshop deliverables within minutes of closing our workshop. In order to
minimize the 'behind the curtiain' processes that would normally require
multiple clicks, we have built a set of about 50 specific macro-enabled
toolbar buttons to automate our tasks. This allows us to drive the workshop
rather than drive our spreadsheets. In Excel 2003, we completely hide the
standard and formatting toolbars, and instead use two custom-built bars.

There is nothing in the Ribbon that empowers us in the way that our
one-click toolbars do. Our workshop participants rarely see the machinations
of what we're doing, because we have refined and automated our process well.
We facilitate workshops for a living - 52 weeks a year. Upgrading to Office
2007 has destroyed our ability to use our #1 toolset, and eliminates the
competitive advantage that we built for ourselves. I simply want to build my
own toolbars and have the interface that I want, and I want to eliminate the
Ribbon altogether. Can I do it?