[plt-scheme] Does the autoloading of snip-classes support a PLaneT source?

I see that if the snip-class name is of the form "(lib ...)" that the 
snipclass can be dynamic-required.  Can the the same support be available 
for PLaneT-derived snips?

I'm looking at mred/private/snipfile.ss, and I see that the definition for 
"ok-lib-path?" only allows snip-classes to be auto-loaded from 
collections.  If that definition could be expanded to also allow PLaneT 
packages (maybe by just using module-path?), that would be nice.