I don't have both configurations so I can't compare the weight, but I would expect a little increase, possibly imperceptible. A couple stainless steel screws and a little more aluminum reinforcement webbing.
TomD5000IR, V1, Oly OM-D E-M5Nikkor Zooms: AF-S 18-105 f/3.5-5.6 VR, VR, AF-S 18-135 f/3.5-5.6Nikkor primes: 24 f/2.8Ai-S, 28 f/2.8D, Micro 60 f/2.8, 85 f/1.4D, Nikkor-C 500 f/8 Refl.Nikon 1 lenses: 10mm f/2.8, 10-30mm f/3.5-5.6 VR, 30-110mm f/3.8-5.6. Voigtlander 58mm f/1.4, Sigma 70-300 Macro f/3.5-5.6.Oly 12-42mm f/3.5-5.6, 12-50mm f/3.5-6.3, 12mm f/2.0, 45mm f/1.8, 75mm f/1.8.Lumix 20mm f/1.7, 14-140mm f/4.0-5.8, 100-300mm f/4.0-5.6 Gitzo GT3541L, Manfrotto MT293A4, MP 680BMarkins M-20, RRS BH-25 Pro
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