Placement in IS is a bit tougher, since many companies still prefer CS and totally ignore CS. But most good companies also allow IS people to write.
IS is easier than CS, doesnt have advanced microprocessors theory and lab, which i heard are the toughest subs and practicals in 5th or 6th sem, dont remember
4 out of 6 subs and one lab will be same for CS and IS. only 2 theories and one lab will be different, it is possible to choose all CS subjects as electives incase you're given the free dom to do so.
Our HOD was a master and expert in neural networks, which is taken only by 2 colleges in whole karnataka :| ours, SJCE and RVCE. Really sucked in 8th sem, almost though i'd flunk in it.