I can't find any subbertag for the releases from tokyotosho.info/search.php?username=roger Can't find it through searches either.
There's no subber tag in the filename, so it won't show up in a search. Note how you have to search by username on TT. There's been a general filename format in fansubs for a long time now, and software is set up to parse it. Anything that skews too far away won't be parsed correctly.