I've done this too, mainly because of the limited RAM upgrade options in the ThinkPad T series (only one free slot and one soldered). But one must be aware tha

I've done this too, mainly because of the limited RAM upgrade options in the ThinkPad T series (only one free slot and one soldered). But one must be aware that tuxedo doesn't "make" laptops in the narrower sense. They're a Schenker reseller and while I'm overall satisfied with my tuxedo the build quality isn't close to ThinkPads T or X series.