weidu is a means of creating and installing mods for BGII that allows multiple mods that alter the same files to play together nicely, and as such, *if* the only compatibilty problems between
BGT-BP and virtue was
BGT overwriting files, then yes, i would expect that a
weidu-
BGT and virtue would be compatible.
as a general rule, if something doesnt work with BP or
BGT-BP, there's no way it'll work with
BGT, as one of the purposes of BP was to make otherwise incompatible mods like
BGT play well with other mods (without using
weidu).
if i remember correctly, however, the incompatibilities betwen virtue and BP are likely to be exacerbated with
BGT, as
BGT does things like rename entire areas, which would, i would have thought, caused virtue to fail or generate bugs. however, no-one has tried the
weidu-
BGT and virtue - you could always give it a shot and report back on how successful you were.