I imagine there was a wildlife photo course this week were some instructor highly recommended this product. Or maybe an over zealous shooter in the course might have pushed the product. What ever! So after looking up on the interweb about this product, i have found that only a hand full places have it. Amazon, and through a guy named Arthur Morris.
The question that entered my mind is why would i want my flash to cover the distance my 300mm f2.8 would? My experience has been that animals out in the wild do not like loud noises and or bursts of light. Who knows Animals here in the State may have adapted some. What we do have in stock and works well is the Gary Fong Power Snoot! There is a movie and some great pics on his stores sight showing how to use the item and the results from it.
Buy choosing the correct light meter with in the camera your results will improve too.