I'm just working on the next release and I've got 100kb free space on the disk. I've got to fit a PowerPacker compatible TextViewer, docs, some sort of AUX: device and other bits and pieces. If there will be any space left I can't see why not.
But I'm already working on something better for A1200 users. Booting ClassiWB setups from HDF files on a CF FAT formatted card
Check this thread: