The Grigna 2800 you mention is a tall mountaineering/trekking boot, with thick waterproof leather and a rubber rand that encloses most of the lower portion of the boot. It's crampon-compatible, and in overall usage I'd say is comparable to something like Scarpa's Cerro Torre ($319 U.S.). I can't find any U.S. distributors for the Grigna, so can't offer a comparable price for it.
My best advice is this: Be your own judge. Set the Grigna and a Scarpa or La Sportiva boot side by side and look them over. Check the stitching, to ensure it's clean and tight. Look at how well the pieces of the boot seem to fit together. Try some on and feel for rough spots or places that pinch inside. Make sure the sole is tightly bonded to the midsole. My guess, based on the usual high quality of Italian footwear, is that the Armond will stack up fine.
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