Its tight so knot something you can untie quickly. I use a furler so dont need to ever untie this.
When I read your statement, I understood you were committed to a “secure” knot that is “tight so ‘not’ something you can untie quickly”.
In sailing I have accepted that just when all hell is about to happen Mr Murphy will participate and urge the happening. That is when you want to be able to change direction and not be “tied up in a knot so tight”.
I therefore suggest when using such a knot on your lines that you have another means to release the lines immediately available. A sharp knife in your pocket or at the helm so when things need to be done quickly you will be empowered.
Case in point we were heading up a channel, when a puff back winded the genoa while we were reefing it and created a overlap on the furler. Amid the swirling 15–20 knot breeze and in 4 foot seas I raced to the bow and used a marlin spike to free the furler, pulled the wrapped sail free and regained control of the boat.
There may come a moment when you may have to think outside the box to protect your boat. Having options may be the answer. It is why some sailors opt for the bowline or soft shackle in lieu of a knot “so tight”.
Certainly the size of the boat is a factor. What I might do on a less than 20 foot boat is different than how I might rig a 40 footer, but the principal of options is valid for both.