I bought a Samsung Galaxy Tab with Verizon 3G quite a while back. When I got my HTC Thunderbolt, Verizon LTE, I found I was using the tablet a lot less, gave the Tab away. Now I have Nokia 928 Windows phone. There's even less need for a tablet since I can sync Office with my Windows 8.1 desktop.
I've considered having a higher resolution, maybe 10" Windows 8 Tablet running on Intel. But keep considering my usage needs and find it difficult to justify a tablet. Might consider a 1920 x 1080 phablet running Windows 8 on Intel. Not sure if Windows phone OS will presently support both phone and full tablet features though.
For serious on the road work I got an old laptop. It still works. If I feel the need to upgrade I would probably go with an Ultrabook, or maybe a convertible when the market sorts out the form factors.
Probably too many types of products spanning from smartphones to notebooks, they're all starting to encroach and cannibalize one another and accelerating the commoditization across the board. Consumers are now expecting all electronic products, and even the software or apps they're loaded with, to be commodities.
While tab is nice to have, its not necessary requirement, if you have a highend smartphone you dont need tab. But if want to keep your phone as only for talking and need something handy to carry out all networking stuff,chatting, browsing, watch movies and so on...its nice to have a tablet. Its so comfortable to carry along when traveling. But yes a consumer has so many options these days, its a tough market.