I too, was in search of Tuck Tape at Home Depot / Lowe's and couldn't find it. When I asked a salesman about it, they didn't understand what I was looking for.
When I said I wanted to seal the edges of vapor barrier, they told me to use the Tyvek tape, the same one you found.
Duct tape won't cut it; it's too porous. We used the Tyvek and it's worked well so far.
Don't use it on hard wood floors as painter's tape; it'll rip the polyurethane right off of the floor (lesson learned).
It is the opinion of the Canadian Construction Materials Centre (CCMC) that “Tuck® 205-02 Contractor's
Sheathing Tape / DuPontTM Tyvek® Tape”, when used as a sheathing tape in accordance with the conditions and limitations stated in Section 3 of this Report, complies with the National Building Code 2005: