you should wait for at least one confirmation and please double check the receiving address (i dont kow him.. maybe he is a trusted trader here)
edit: missing word
Wallet address seems fine but he sent it w/o fee or with low fee & its still not showing up in my a/c.
Just wondering can this be reversed?
Its unconfirmed, so yes it can be dropped by the network and not confirm. I wouldnt do your part unless its confirmed. That is, if you still can.
Its still unconfirmed even though its more than an hour since he sent this to me.