[DeathsSilkyMist]

Did two tests on Shiel Glimmerspindle.

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363 AC Test, Lodi Shield in Back Slot, Nothing in Secondary Slot
=========================================

DV, Count
19, 381
22, 22
25, 33
28, 28
32, 35
35, 39
38, 27
42, 37
45, 37
48, 38
52, 28
55, 32
58, 23
62, 41
65, 41
68, 41
72, 44
75, 31
78, 33
82, 9

Total Damage = 39236

=========================================
363 AC Test, Nothing in Back Slot, Lodi Shield in Secondary Slot
=========================================

DV, Count
19, 418
22, 29
25, 35
28, 45
32, 29
35, 22
38, 34
42, 36
45, 32
48, 33
52, 25
55, 29
58, 37
62, 32
65, 30
68, 31
72, 29
75, 30
78, 40
82, 4

Total Damage = 37110

As you can see, the damage reduction is greater when the Lodi Shield is in the Secondary Slot, rather than the Back Slot. I fought a level 40 mob as requested to show that the "squelch point" is not a factor.