No worries Journeyman [3]: the "wavy-Navy" stripes were canned in canada shortly after WWII while the Navy was still Royal. So there is no going back. After the "Wavy" and until unification the reserve officers of all Reserves (in those days there were two reserves: the Volunteer reserve and the Reserve, which was made of Merchant seaman. Each had its own different wavy pattern in WWII) wore the straight bars with an "R" inside the curl.
By the way, Mia does not have to worry: I have seen how the Brits do it: The curls and wide bar are a single piece pre-sewn at the shop by the supplier so all there is to do for the tailor is sow it on the uniform in one piece, just like the "tape" we now use.
P.S.: We could just start wearing them at least at sea, without "formal approval". In the days of the green unibags, that is how we started the Navy Whites revolution: we just started buying USN pattern whites and wear them on special occasions, then on Fridays for weepers, then when officer of the day, then ... You get the point.