Is it strong? I never made one. I wonder about the structural integrity if dropped or otherwise mistreated.
I have read that end grain is tougher than side grain for cutting surfaces. I rather suspect this is myth. That the notion is founded in the fact that most cuts are dead vertical and as such the knife will slide into the grain structure without removing any where as a face grain cut will forever leave a mark.
What about water - ya know when washing the boards? Won't end grain drink it up fast enough to swell the lumber and affect glue joint integrity?
Nothing in my kitchen survives good intentions: everything gets used hard. So I can't have a purdy board for bread only. Any board I have will be used for whatever needs cutting.
Of course the idea of trying to flatten and finish an end grain board may eliminate it from contention.
Any one got any input?