Stopped by dealer today and compared SeaDoo 420956741 to Spyder 420956743 and they are IDENTICAL in SIZE with the same grommets on both ends.
Construction of the Seadoo filter is much like the Hiflo used in pre-14's; that is, it does not have the outer wire construction. However, many of us have used Hiflo filters exclusively with no issues that I've heard of.
Therefore I can see no problem with using the Seadoo if you can't find the Spyder one. Priced about $12 vs $16.
Let me point out that I'm not a mechanic, and not proposing that any of you do this. Its strictly your call.
Maybe someone with more knowledge of the 1330 motor and its oil pressure system can chime in on this subject.
I've emailed BRP asking them if the two are interchangeable.
Heres what the Seadoo filter looks like:
http://www.ebay.com/itm/4-STROKE-OIL-FILTER-SKI-DOO-LYNX-SEA-DOO-EVINRUDE-JOHNSON-ROTAX-CAN-AM-420956741-/261222557827?pt=Personal_Watercraft_Parts&hash=item3cd213e883&vxp=mtr