Excellent question Chris.
The short story is, yes. We've thought a great deal about this, tested thoroughly and developed a three stage oiling process, hand applied by Richard.
In a bit more detail - the first thing to say is that your bowl and brush will last longer if you're careful with them - don't leave them soaking wet for hours or covered in foam if you can help it.
That said, we've worked hard to create products that will last. Over the past six months we've tested several finishes (by ignoring the above advice and leaving them submerged for days, pouring on boiling water, freezing them...). Eventually we settled on a three step oiling process. This should be enough to let your bowl last a very long time - and Richard makes sure to oil under where the soap is poured too, so that you can use the empty bowl as a lathering bowl if you choose (or refill it with one of our refill pucks).
Hope that helps.