Dead Space 3 will allow you to dress Isaac and new chum Carver in Mass Effect-inspired armour. See it in action through the break.
The N7-branded armour actually looks quite cool, and it's extremely easy to obtain. If you have a Mass Effect 3 save file on your PC, PlayStation 3 or Xbox 360, and load up Dead Space 3 on the same system using the same Origin profile - bam, it's yours.
Dead Space 3 is due on all three platforms in early February. A demo hits general release this week. It doesn't seem very representative, though.