If you have two Xans in the same spot, then you have installed two components/mods that were not meant to be installed at the same time. The author has a quick response "you should not install BGT Tweaks component X with BG2 Xan" and need spend no more time searching for answers, and the user is faced with the obvious mistake and can do a forum search for the answer.
Wrong. "Two Xans in the same place" can equal to many things, from a not-so-uncommon reinstallation issue to yet *another* mod using this spot to a rare random glitch in an "incrementing Xan-spawning variable" operation to an issue with a new install and an old save game to a new Xan version with a different variable.
And, in case of another mod, these problems will multiply. I cannot be debugging someone else's problem, physically: not only it is counterproductive, but, most importantly, I can only address issues in my mods.
"Two Xans in the same place" is not a strictly Big World Project-related issue(BWP folks are innocent here), it's a potential issue for any user who uses Xan andBGT tweaks together. And, yes, I can picture dozens of users, who will reach BG2 and say "Hmm, shall I go to the (say, Bridge District) and pick Xan from BG1, with his stats and items, or shall I go to the Government District, pick Kulyok's Xan and play that quest with the stolen ring?" So, both components, Xan from BGT tweaks and Kulyok's Xan(and Talon's Xan in the Gate District!) _DO_ have a right to be installed in the same game.
Bottom line. I do prefer this picture: Kulyok's Xan stands at the entrance to Government district, if there's a problem with Xan there, Kulyok debugs this problem. If Xan stands elsewhere, it's another mod and another author's problem. This way, everyone's happy.
@A64: any place that is not Government District is fine with me. I do appreciate your cooperation.