DH and i swapped roles last week...he was stay at home parent and i was working (placement for uni).
we discussed what needed to be done, because he's not normally here (things like activities and timings) but the rest he did his way....including homeschooling our 8 year old! He did awesome, has a new appreciation for how busy i am and i have a new appreciation for being a working parent.
he stuffed up a few things, but so do I lol
Interestingly, he did much better when just left to it for a week, than he does when coming home from work and "helping"...but i think, now he knows how it all works and what needs doing...things will be better all the time.
I fully recommend it to any couple...swap roles...learn to appreciate the other and hopefully things will run smoother.