AI has got better at reducing equipment swaps. But it's occasionally an issue, especially given the stark contrast between it's newer and older planes. They also have got better about issuing refunds for equpment swaps although YMMV. Someone here reported getting a free upgrade voucher for a India - EU route when he was downgraded... but I have seen them issue full refunds at the begining of this year as well for that.

I would probably take the risk though.