Hi - k2, Virtuemart and Kmart confusion

Okay i just got the kmart component which is the new thing for intergrating virtuemart ...


The Shopping Cart Icon at the top is meant for Virtuemart...

If i am using k2.. can i still use that? If not.. what can replace it?


Can i use BOTH k2 store and Virtuemart....



I have this problem because, i want users to be able to do an advance search and to be able to view their cart... But I need to use k2 for the comments and rating system as well as the taxonomy

Im so confused now as to where to start and where to update my products and what to show what not to show on the main site.