I don't have my tablet infront of me, but on my drolid x2 when I look at my exchange email account settings, I can tell it to not sync my email, but leave the contacts and calendar syncing with the phone through exchange without using a third party solution. you're not using cellular data, so your tablet can sync it natively without buying a program to sync - my transformer pad is syncing my email, contacts and calendar. I used touchdown int he past and tried another program that was available, I think it was k9 email, and neither worked as well as using the exchange account built into the phone.
Again, you DONT need a third party program to sync an exchange email account on the tablet, you should be able to tell it to NOT sync the emails with it and leave the contacts, calendar and tasks.