^^^ what they said.
The biggest drama getting used to boots is getting the hang of to how to get in and out of them while flying a kite, or convincing your mates to launch your kite and bring it to you while you sit patient and ready to go at the waters edge. Having said that though once you get the hang of it then it's not a drama at all.
If you are comfortable enough to sit at the water's edge for a few minutes with your kite flying and spend some time fiddling as if you were putting on bindings (dont look at the kite the whole time) then go for it!
Also all boots are not created equal. Some of them take longer to get n to than others, but the really easy ones to get in to are generally much less supportive.
PS: beware of gnarly shore breaks in boots. Trust me... lol