I did this with my husband and another couple, for a time. It was fun but the other couple mostly lost interest in the game. When we were down to meeting (at best) once every three weeks, I decided it was time to move on with that character.

What I took away from it -

Scheduling is tough. In the beginning our ideal was to get together once a week for a session of about four hours and we made decent progress that way. Even during the "go here, fetch that, and fight these weak mobs" intervals, having a group keeping pace with you and running around together is a fun experience.

Everyone must be very patient and committed to the group because there will be varying skill levels. Dungeons like Arum Vale and The Vault can still be frustrating with new characters and (possibly) players.

Overall, I found it was definitely worthwhile.