Mine is just a converted "dog" box...and TBH on the road I really fucking hate it. There's no issue changing gear as such, it just makes everything a horrible clunky bastard most of the time.

Those times when you can drop into neutral are wonderful ! lol. To have to run a sequential....it almost doesnt bare thinking about. At least not on my car.

That said, due to the horrible 4-linked rose jointed live axle on mine...and huge heavy propshaft, those things also exacerbate any nastiness.

When I've a synchro box in the car, it truly is a transformation. That very small amount of slack in engagements the dogs offer, really makes a huge difference on the road to smoothness etc. Synchros are smooth, quiet...dogs are not.
If you'd a much tighter drivetrain, maybe FWD etc, things may not be so bad though.

I currently need a stronger box and had seriously been considering a proper sequential for the performance benefits it could offer...but I'm coming to the conclusion no matter how it might help, I dont think I could live with it in the car given how much I hate my dog box.

That said....I could still consider a sequential shifter at some stage with a new synchro box. At least if I didnt like it, it'd be an easy removal via 4 bolts, although obviously it wouldnt see the full benefits of sequential operation on a synchro.
But I like others, have had the wonderful experience of finding 1st instead of 3rd, and have the destroyed diff and CWP to attest it isnt a good thing.