MultiBit HD and possible XT fork question

[Coiner1]

Multibit on Core or XT?

[jim618]

MultiBit HD (and MultiBit Classic) will automatically follow the chain with the greatest work done in it.
Basically it will follow the 'winning' fork - the one that is the longest/ dominant.

I would expect that one fork will dominate pretty quickly so users probably won't have to worry about it too much.
You are right that if different wallets use different forks it will be quite confusing but I think in reality it is not going to happen.

The time to be most careful, especially if you are accepting bitcoin for product that you are shipping, is whilst there are two active forks and it is not clear which side is dominant. Then the safest thing to do is simply wait i.e you wait until the fork is sorted out and you know your payment is in a block on the 'winning' fork.

I put 'winning' in quotes as it's not really a case of winning and losing but that's the clearest way to say it.

[jim618]

Most likely there is only going to be one successful chain so that it is very unlikely there will be two forks of bitcoin used for any length of time.

Honestly I wouldn't worry about it.