As an outsider, I can only comment this way and ones are free to take it for what it's worth. I don't think it is necessarily expedient to seperate into these categories of "Garvey" and "Selassie" Rasta. Indeed - what makes Rastafari what is is the experience of the African in the diaspora - this is the common ground and perspective from which the roots of the Rastafari movement flow.
As a white person who identifies with Rastafari, I know what you are talking about in regards to ones far removed from the original culture from which the Rastafari movement sprang, white ones have the ability to completely remove the messages of Garvey from their trod in favor of a white "color-blind" liberalism. If one follows the money trail and internationalization outside the context of the original movement - I think it is here that we will find how the message of self-determination got watered down.
I think it really comes down to a matter of perspective(where one's head is at and their experience of the issues that formed the groundwork for Rastafari works) - and I think seperating Rastas into camps of "Garvey" and "Selassie" could actually be taken as offensive to some who are connected and still uphold the original foundation of the movement.
Just my opinion.
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