If you are looking for an alternative to the classic desktop or notebook running Windows 7 or 8, sure maybe the new unreleased Surface Pro may be the choice
Tablets e.g. iPads are not meant to be notebook replacements although I use mine for work daily for most task, email, content consumption, web conferences, IM, VPN, minor office document editing, internet browsing
last I read the Surface RT has .13% marketshare in tablets, if the Surface Pro starts at $899, why wouldn't I just have a slim notebook - Dell, HP, Lenovo, Apple.. just to have a touchscreen interface...not hardly
I will not trade in my nice slim 3lb notebook for a Surface Pro just for a touchscreen UI
Will some SMB and Enterprises adopt a SurfacePro from Microsoft or OEMs, sure , will it have a dent in overall tablet sales? Time will tell