Sure, it's possible. You will need to know how to merge portrait files and edit the cultures files though.
Check which cultures use the same GFX in both and for those take the faces from Tubbs and the clothes from BLG. For where the cultures have a different GFX, create new ones and manually merge faces + clothes.
I have somewhat similar question,but that's a tad bit complicated for me,what if i just want to replace certain portraits (Valyrian for instance) from BLG with the ones of Tubb's Better Faces? I tried replacing portraits_valyrian.gfx but as you'd assume,it kinda broke the mod. .-.
And who are you, the proud Lord said, that i must bow so low?
I'm playing on CK 2 22.214.171.124 and AGOT 1.9 with BLG and i haven't encountered any issues, here's few Screenshots - imgur.com/a/kUPNCH7 Also in those screenshots you can see what my problem is, Northern Andal Graphical Cultures look beautiful, but Reachman look so hideous i had to literally convert most Reachman families G_culture to Kingslander. Valyrians aren't game breaking for me because there's few of them and they don't look anywhere near as bad as Reachman. Northmen use new French portraits i believe, which are okay, i kinda got used to it,but some Reachman portraits are straight up nightmare inducing, especially with BLG's visual representations of Traits. anyways, would there be an easy way to replace Reachman and Valyrian portraits from ones in Tubb's BF? if it's too complicated it's alright, i'll hang with it, considering i've already invested into the save.thanks in advance btw! P.S - This is where i got the AGOT Compatible BLG from,just in case : agotcitadel.boards.net/thread/2020/looking-garbs
'A Game of Thrones' is a user modification for Crusader Kings II not affiliated in anyway with Paradox Interactive or the rights holders to 'Game of Thrones' and 'A Song of Ice and Fire'.
This modification and it's team takes no income or profit, whether it be through donations, advertisements or any other form of revenue.