In reply to TobyA:
You could, but given that the cup is also insulated it doesn't cool down that quickly, so there wouldn't be too much difference (a bit, but not a lot - particularly with the lid). Throughout the last few months of use I've bascially used either/or, because they don't make a great deal of sense together for the reasons outlined within the review. Both are incredibly well made and work really well, but when combined - I just fail to see the benefit.
Whilst I haven't used the IKEA model, that is the sort of design I was referencing as a more logical and functional design (i.e. a long flask w/ small cup). To me that style makes far more sense. If you don't want that, just get a bottle - simple...
The fact that the MultiBev costs ten times more makes it a challenging sell.