I have a really long surname, the kind that you always have to spell out, and it's interminable. DH also has a long surname and it's double barrelled (each word being not so long by itself but together they're a real mouthful). (I kept my own surname). So when I have a DC or DCs I'd like them to have one of DH's surnames, namely the first one- it's short and sweet. I don't want them to have the same issues I have had or DH has had with a long hard to spell surname. So say I'm X and DH is YZ, they would be Y.
WWYD? Do you think it would create endless confusion? Trips and forms and so forth?