I'd think the bggest issue with hip boots would be how well you could portage in them.  If the feet are loose, I'd say forget it, for sure, unless you are bringing hiking boots for the portages.  But even the portages are likely to be very wet and muddy in a normal spring, and those along streams or rivers can have sections under water.  Its not just at the landing that you'll be wet or dry footing.  Hope those hip boots don't come off in a deep mudhole.

I've never dry footed, and most of the trips I've done have been at the end of May first week of June time frame.  Did one trip in mid-May.  Have had water frozen in the canoe a few times, and frost maybe once each trip on average - i still wet-foot.  sometimes the feet get numb - I live with it.