Interesting that you mention that -- I thought it was just me, but in my opinion, MacBaren Scottish Blend tastes better out of briar than it does out of meerschaum. I find that the deeper the bend in the pipe also affects (improves) the taste. I have compared it between a meerschaum tankard and a briar bent apple and sound the second is preferable.
It's same for many of my own blends, I find it's usually the mild ones that benefit from being smoked in a briar. The wood just gives it that certain extra flavor which also elevates what little the tobacco can offer by itself. I never considered the bent when it comes to taste, I'll have a closer look on that.
OT:
My first briar bowl of MacBaren's Scottish Blend, I can tell right off that the briar gives it a second chance to shine. It's still mild but has more to it. I'm just about done with the bowl and still happy, it gets sharper and better. Having a frosty tall blonde to cool down the hot short brunette.