Ok, I just updated my Tab to ICS using the XDA forum guide. I did the NoWipe ROM and it worked fine, ICS is so much smoother than HC. [ROM] STOCK - FULL ICS IMM76D.LP10 for Verizon i815 LTE Tab (only!) *UPDATE 10/16* - xda-developers
Feel free to give it a try if you NEED ICS like I did for work.