I recently changed careers from I.T. to financial services and am still trying to get my legs under me as it were with respect to how to work. What I'm finding is I still need a regular notebook and appreciate the compactness of the tablet when on the road and between client sites.
When I need to sit down with a client and/or do real work for a client I need to use the notebook but when I'm between client sites and just need to have something a little more convenient and portable but still capable of having a real keyboard (i.e. not a phone) then the tablet fills the usage case. As of yet I haven't felt the need to run out to my vehicle and grab the notebook provided the required work isn't more involved. Having both really is the best of both worlds because sometimes the notebook is just too cumbersome and sometimes the tablet is not enough. The tablet is effectively primarily a communications device and used for quick looking up of data. I don't regret having all three devices (phone, tablet and notebook) and if one were to die I'd replace them.
My usage case consists of the typical business user type applications: Word, Excel, Acrobat Pro and various web portals. I still do the nerdy computer hobbyist stuff at home at times but use the notebook for that most of the time.
2001 Jeep Cherokee [ LAs, ARBs, WJ knuckles, locking hubs, full float Dana 44 rear, 265/75-16 GY DTs, armour, etc. ]
1988 Jeep Comanche [ bare unibody in the studio, working towards late model interior and drivetrain ]