I upgraded my 24-70 2.8L (I) for the Tamron 24-70 2.8 VC.
My main photography is urban exploring (only with Tokina 16-28 2.8) and this year model photography with 35L-85-135L and/or 70-200 2.8L II.
Monthly I do clubphotography (mainly with the Sigma 15 2.8 Fisheye) with slow shutterspeed + light-effects.
I upgraded from the Canon 24-70 2.8L to this Tamron for the better IQ and VC, but this isn't actually a "creative" lens which you would use a lot (definitely not for modelling).
I bought it from a party photographer and tested it once, the backward zoomring was a bit awkward.
I feel this lens will be more for family trips (for example Disneyland Paris within a few months).
Do you also think this is more a 'tourist' lens or are there any fans over here thas use 24-70's a lot (not for weddings I mean) ?
Maybe this one will be appreciated more when I use it more for partyphotography next to my fisheye.
Maybe i'm just a prime guy who appreciates creative fast price and I should sell it for 24 1.4L or upgrade my 85 1.8 again for a 85 1.2L 
So mixed feelings about the Tamron 24-70 2.8, not for the quality but for the usuage/creativeness 

