Ivern support can take smite, this gives him an additional slow, or if you need it, 2 more wards. As for adc interactions, he allows them to gain a dash. You don't have to root a champ, rooting a minion can get you behind them, which is just as dangerous, especially for bursty adcs or those with escapes. Sivir's ult increases daisy's attack speed. Unless your jungle is a farming jungle like shyv, giving up the nearby camp, after first clear, shiuldn't be an issue. This gives your lane an xp edge you wouldn't normally have. Just things to keep in mind. There is always the few jungle invades you will successfully get if you ward properly as well. The extra smite also helps to secure drag and baron, Double red bot is scary. Just a few things more things to think about.