I have been given a manual one from my SIL who only used it twice with 3 children.
If she hadn't have given it to me I would have waited to see if I needed one or not. It is going to be handy to have one though just so if I need to go somewhere bubs can still be fed etc...

but I would maybe wait to see if you need one?? Really it's up to you!
Would you feel more comfortable buying one now and having it there just in case or would you feel better waiting and not spending the money if you don't have to?