If you're more comfortable using a regular-sized pen, Samsung has an accessory that should please you. The $59.99 Galaxy S Pen and Holder Kit has both an extra S Pen and a Holder that makes it the size of a normal pen. You get the side-button functionality and everything, just in a larger form factor.
In an interview with LAPTOP Magazine, Samsung product marketing manager Ryan Bidan says that having a pen interface similar to what we see with the Galaxy Note "continues to make a lot of sense across a number of screen sizes," but won't go so far as to say that the next 10.1-inch Tab will have a stylus. Still, the possibility has many all a-buzz with the possibility. I wouldn't be sad to see a small stylus like the Note's come with the next Tab as I'm a fan of stylii in general.