Hi, you're right to question any points of view provided on such a forum.
Projects can range from 6 weeks for a typical Opportunity Assessment, to 3-6 months for a strategic sourcing intitiative.
Typical engagements include the aforementioned strategic opportunity assessments, actual category sourcing, post merger integration sourcing work, procurement transformation, benchmarking etc.
European travel is mandatory, you can work further afield if you express a preference for this. With regards to European travel, notice could be 1 or 2 days, or over a week - depends on individual circumstances. Not sure about international travel as I didn't experience this.
Morale is good, this area of ATK's business is growing quickly and is increasing in prominence internally as well. Possibly linked to the economic environment and company's needs to cut costs, procurement work is hot at the moment.
Exit options are good, however, it is surprising how many industry people involved in procurement are not as aware of the ATK brand and seem to be more impressed by a Big 4 brand. Of course, other consultancies are more than aware of ATK's brand.
hope that helps