http://i.imgur.com/CVVUBQK.pngModified version of one of the merged examples with a BTC logo.
Personally I don't think this works very well, as it somehow makes Viacoin seem to be a subsidiary of Bitcoin and deludes the brand (while I already tried to make the BTC logo less prominent). Having the Bitcoin font and the button look is fine and even needed in my opinion, as it has become more or less a standard across all leading coins. The recognition going with that should be enough. Moreover its important for merchants to have this standardized look for their customers, especially since it creates a harmonic overall impression. If every coin has its very own highly customized button, it might put merchants off to integrate these images on their website as it looks like a banner desert in the end.
Nevertheless it would be good to have ADDITIONAL buttons and options available to offer merchants a wide selection to choose from if they wish to. Maybe a webdesigner or even merchant could give some insight
