Maple Vinaigrette: Whisk the olive oil with the vinegar, maple syrup, mustard, garlic, salt and pepper. Set aside half the vinaigrette to brush over the pork during grilling.
Salad: Preheat the grill to medium-high; lightly coat the grate with cooking oil. Brush the pork with the oil; season all over with salt and pepper. Grill the pork, turning and basting with the reserved vinaigrette, for 15 minutes or until an instant read thermometer registers 155°F when inserted into the thickest portion of the tenderloin. Rest for 5 minutes before slicing. Toss the apricots with 2 tbsp of the reserved vinaigrette. Grill for 1 to 2 minutes or until marked. Thinly slice the pork. Toss the arugula with the radicchio and remaining vinaigrette. Arrange a bed of greens in an even layer on 4 dinner plates. Top with the sliced pork, apricots, Gouda and pecans.
Use fresh apricots when in season. Substitute crumbled goat cheese for the Gouda