Not bad at all
I personally think that Windows tablets are a very smart move, especially if you can make them decent performers. The only issue I have with them is, how is this any better than an Android or iPad tablet with Splashtop installed. I can RDP into any of my computers and have the same functionality...especially if you were to use an external keyboard and mouse. I think you have to make these very very competitive on price of else these will fail miserably.
Not having 4G is a plus, because starting next week I can tether my phone's data plan. Rarely will I need to do something that I can't already do on my phone.