After the some of the names mentioned, Rangnick, Ranieri et al, SC does seem a little underwhelming.
However having read more about him, including Mourinho's positive endorsement of his talent, I would defer to those who have actually worked with the bloke, know something of the running of top level football clubs on a day to day basis and actually rate him quite highly.
JP has obviously taken his time and kudos to the club for signalling the measure of our ambition by being associated with some top class coaches. It may be that the main target moved away from us and Clarke is plan B, but if RR did turn us down it doesn't seem to have been an easy decision.
Personally I'm feeling more optimistic than I was when i first heard, so, by the time the first day of the season comes round I'll be sure to boinging away as usual.