[plt-scheme] experience rewriting scheme systems in common lisp?

Does anyone have experience with tools help for rewriting Scheme code as 
Common Lisp,  such as with Dorai Sitaram's "scm2cl"?  Or perhaps even 
with Pseudoscheme?

A client has a decent-sized production Web system implemented in Scheme 
that, for various reasons (no fault of Scheme), might need to be moved 
to CL.

My tentative strategy is to replace the general purpose Scheme libraries 
with API wrappers for their CL analogues (and perhaps later change the 
call sites to use the CL library API directly), semiautomatically 
transliterate the remaining Scheme code, get it to compile, and then 
start working through runtime problems.

The good news is that the Scheme code I've seen so far isn't especially 
idiomatic, and I expect it will translate to CL more easily than average 
Scheme code.

Any thoughts?

http://www.ccs.neu.edu/home/dorai/scmxlate/scm2cl.html
http://mumble.net/~jar/pseudoscheme/