Fitted the Acerbis multiplo's to mine and they are about the best on the market, they have now been updated and called the multi concept,They are slightly more expensive than the ones you suggest but are well worth it.
You can fit the original bar end weights but you will need to open the hole out on the end of the bar to 19mm, fitted them to my R and tenere, now got them on my KTM 950.
These are in the uk and where i bought mine from
http://www.riderz.co.uk/handguards/a...andguards.html