I've been playing with the pre-production versions for a while (actually, began using the Eclipse-type about 5 or 6 years ago).
The short-blade guide is very useful for small spokeshave blades. In this picture is the blade from a Stanley#84 .... which is about the narrowest blade I could find. If it can do this, then it can work with any spokeshave blade!
How about a skew blade from a side rebate plane?
Regards from Perth
Derek