Indeed, it's the most expensive construction as strictly speaking, they're not lugs, just a sheet that's have to be shaped to look like lugs before brazing.
No advantage over fillet brazing or lugs, merely for cosmetic reason.
Would loved to have it (and Ryan did some recently), but I like to keep it nice and simple with fillet brazed.
Indeed, it's the most expensive construction as strictly speaking, they're not lugs, just a sheet that's have to be shaped to look like lugs before brazing.
No advantage over fillet brazing or lugs, merely for cosmetic reason.
Would loved to have it (and Ryan did some recently), but I like to keep it nice and simple with fillet brazed.