What is your definition of a Business Partner? There are some IT shops who have 'Business Partner' relationships with both IBM and Microsoft... and maybe Google and a couple of other technology providers who also play in the Notes/Domino space.
There's nothing illegal in doing that but I suggest that IT shops who sell both Notes/Domino and MS Exchange/Sharepoint are not worthy of being called 'IBM/Lotus Business Partners'. Call them resellers if you like but I don't see how someone can be your Business Partner and yet still sell your competitor's product.
These schizophrenic resellers may say they are providing a choice for their customers and that they run two independent consulting practices just like accounting firms run separate auditing, tax and compliance divisions but IMHO that's just a crock. Accounting firms can certainly cross-sell services but winning a client for your Audit division doesn't mean that you automatically lose that client for your Compliance division. On the other hand, winning a sale for Exchange is a direct hit to your Notes license revenue and a slap in the face for IBM.
For my part, I'm an IBM/Lotus Business Partner and I won't ever wave a Microsoft Exchange/Sharepoint or Google GAPE flag. I tell my customers that fact up front so they know where I stand. Maybe I'm missing an additional revenue stream by not hedging my bets but I probably sleep better at nights.
And IBM knows that whenever they introduce me to a client they don't risk that I'll be upgrading that client to a competitor's products simply because I can make some short-term money selling additional licenses and even more long-term money supporting a consulting-intensive product.
So where do you stand? Are you an IBM/Lotus Partner or just a reseller?