Our SOP's call for flap 15 to flap 30 or 40 directly. Shouldnt be a problem if you are not exceeding placard speed should it? After selecting gear down (and normally flap 15) we call for the landing checklist to flaps and then when final flap is selected we complete the checklist. Seems to work fine, frequently will ask for 'non-standard' flap 25 if deemed more appropriate before landing flap is selected.