Good thinking, asking Wacom directly…
I’ve been using a Tablet PC at work lately (building a database application for on-site inventory control), and can’t say I recommend it for use with ZBrush.
For one thing, you can’t see through your own hand. I’ve mentioned this in other threads, but I can’t stress it highly enough. The PC was built around not having that limitation. Likewise, you don’t want to smudge or scratch the screen, and that’s pretty much inevitable.
For another, the visual cues are misleading – the term is “parallax”, and it’s quite disconcerting. For broad strokes, not an issue, but if you’re trying to draw something very precise, the short distance between where the image appears and where your pen touches the screen will fool the eye and make you do stupid things.
Both of these issues go away when you use (and get used to) a traditional tablet.
You can do respectable work with a gig of RAM. But more is always better, and that’s pretty much maxing out at the bare minimum that you’d want to suit your needs right now. In a year or two, it flat-out won’t be enough.
And finally, the form factor’s not going to work for you. You have more control with the screen in one hand than you do with it on your desk, or mounted to a keyboard. But in that position, you don’t have your keyboard shortcuts. And those are twice as important when you can’t count on your pointer to hit the right interface buttons…
I love the platform, don’t get me wrong. Those applications designed for it are absolutely brilliant.
And I think the limited hardware is only a problem in this one specific instance. For most anything else you’ll do with it, you can either work locally (as less resources are required), or use Remote Desktop and your built-in 802.11 adapter to control a more powerful machine, upgrading that one as needed. In this way, you needn’t worry about it becoming outdated. But for ZBrush, you do have to face these limits directly. And they’ll only get worse as the OS itself crowds out your resources with service pack after service pack.
Also, if you’re planning to buy a Tablet PC, look into Motion Computing and Fujitsu – each of these companies offer a better display technology wherein your Tablet PC can actually be used in direct sunlight. Which should give you an idea how bad it must be without that technology – you can see what’s on your screen if it’s an image of great contrast, provided you place your body between it and the sun to cast a shadow across the screen…
Do you need to use your Tablet PC outside? Maybe not. But I guarantee you you’ll find a reason to do so the moment you spend all that money and don’t have the ability. This is not something you can upgrade to later – it’s an extra $300 at time of purchase…