Touché
In your field (I do a small amount of consulting myself) flexibility is a key aspect. While you need to be educated and firm in your recommendations, especially if they are using equipment not best suited for the job at hand, you are at the whim of your customers wishes. I still stand behind what I said previously, as in my experience, customers with an opinion unique or drastically different from my own, are not a good fit for me to support, or advise.
If you can and have recommended people both to and away from Apple products, that would tell me that you are more open minded, but I am not going to influence your bottom line.
The bottom line is just so overrated.
Honestly I recommend Macs in all cases except for gaming or some 3d actually. PC's are good for throwaway computers where I don't want to risk my Mac.