I'm just the opposite - I like the push-push for SD.
My Sony Vaio has that, works great. So does my Canon camera. I pop the card back & forth all the time for pictures, way faster than downloading via cable. Also does not use up battery.
When it's clicked in, its in.
My wife's HP does not - have to yank the card out. Always awkward.
Were we talking uSD also? Have not seen anything but push-push for circuit cards. Push/pull in uSD/SD adapter only.