erm, noknok...tat seriously depends on ur JP...let's say ur JP is ur church pastor or priest, then i guess u have to check with him cos the vows shd be pretty ceremonially sacred which means they prefer those tat's more aligned to the religion...
however, even for the civil ones, if ur JP is pretty 'standard' kind, he/she might just not allow u to do diff variation of the vows other than the very standard kind...
in addition, u may be able to find a handful JPs tat do allow u to 'custom make' ur own vow...i do know of one who does tat also...he's pretty open to it...