As a little research will readily show, there are plenty of precedents for engine house arrangements and engine stabling practices of all kinds. In more modern times, railroads that painted large engine numbers on the rear of their engine tenders would find it convenient to have those tenders facing out for purposes of ready engine identification. In other circumstances, the minimisation of the cost and mass of smoke jacks could be a consideration.
Apart from all this, it might be observed that turntables generally come in pairs. Accordingly, one might wonder where the second WW&F turntable will be located.