The recently released 'regular' 2015-11-21 image of Raspbian Jessie should cause no particular trouble in installing Pimoroni products (after the recent tweaks to the scripts).
For customers wanting to use the new 'headless' flavour (version with no 'desktop' environment provided), the so-called 'lite', however, until the installers are adjusted, here are a few simple steps you can take to smooth things out:
sudo apt-get install git
sudo ln -s /usr/bin/pip3 /usr/bin/pip-3.2