The MulePack is similar to the
Scopac Lite and works in the same way. However it feels like a more refined product than the Scopac and for me felt more comfortable in use.
It attaches easily to your tripod and lets you carry your scope/tripod combo around ready for use. There is an integrated zip pocket in the back, and a well thought out field bag that attaches to the Mulepack for notebook, field guides, drink bottle, etc.
Like all scope carriers it throws up the eternal dilemma: if your carrying your scope where your backpack used to be, what are you going to carry the rest of your stuff in? Apart from that it's a great solution that lets you carry your scope in comfort and with your hands free to grab the bins when that rarity whizzes by.
You'll find a more thorough review of the
Cley Spy Mulepack and comparison with the Scopac Lite on the Ireland's Wildlife website.