Inkscape has a multipage extension: http://sourceforge.net/projects/inkscape-pages. Thanks to its authors: Cosmin Popescu!
In my case the default shortcuts were not recognized by the system. To change them, first identify the key symbol with xev. For instance, The '3/Av Pag' of my keyboard outputs:
KeyRelease event, serial 40, synthetic NO, window 0x5400001, root 0xd4, subw 0x0, time 5270752, (318,-162), root:(320,503), state 0x0, keycode 89 (keysym 0xff9b, KP_Next), same_screen YES, XLookupString gives 0 bytes: XFilterEvent returns: False
From which we get KP_Next as the symbol to be used instead of Page_Down.
Replace these as you wish in keys.xml file of the extension, reinstall, and start browsing through the pages.