Im kind of curious if anyone has had experience with these.

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=230026699897&ssPageName=MERC_VI_RUPX_BIN_Stores_IT&refitem=230019865019&itemcount=4&refwidgetloc=active_view_item&usedrule1=UpSell_LogicX&refwidgettype=cross_promot_widget

and here is a few better pictures:
http://cgi.ebay.com/CHROME-MEGA-SAFE-STRAPLOCKS-Strap-Locks-for-Guitar-Bass_W0QQitemZ270077880660QQihZ017QQcategoryZ20831 QQrdZ1QQcmdZViewItem

not sure these will be good but im curious if anyone has had experience with these