Definitely going to leak, especially with snow and thaw cycles. The shingles should have been continued through the valley up to the ridge creating a typical lap joint, not cut as it appears in the photo. Unless they have a continuous ice/water shield running through the valley to the ridge it won't last. Depending on what kind of inspection you are doing, consider giving client info on roofing procedure options and checking warranty paperwork. If you lift shingles (carefully) at gutter line you can sometimes determine if they put down ice/water shield or just #15 felt.

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Accurate Inspections & Consulting, Inc.
773/844-4AIC
Markus Keller