I have done this. I load some at home, some at work. Have the software multiple computers.
The thing is, if you are loading them into a store, or just your collection. If loading to a store, you should not have problems. I haven't.
Just run the UPDATE before you start each session on each computer. It will get the added information from the other computer from the website. For instance, sales you have, or price changes, etc.
Join the store on FACEBOOK!
* All items must be returned prior to refund at your expense. Return shipping not refunded.