I use the shell now since 2 weeks and would buy it again - at the price offered here of under 10 it is unbeatable for the delivered quality and worth every penny.
Unfortunately, there are still weaknesses.
1. The Dell Venue 8 really does not fit in this envelope. The sheath is too short for the tray about 5-10 millimeters, so that the Venue 8 extends up or down slightly from the envelope out. Nothing really serious, but with a sheath for 7- and 8-inch tablets I expect that it'll actually fit - and Dell's not an exotic manufacturer with unusual materials.
2. The adhesive pad in the envelope is - as described above - really extremely "firmly". As I read the criticism previously, I have scanned the pad before the first bonding several times with clean hands and pull the tablet every 1-2 days from consciously. Because the pad is strongly adhered to the lower shell initially actually bends when pulling. So if the tablet sticks to the freshly stripped pad and can stick there longer, it probably actually gets from only with great difficulty. For me the pad after 2 weeks and approximately 10x peeling still stuck very strong but not so that the envelope would be damaged during removal. Another alternative would be to stick to a not so strong adhesive Haftpad to the original pad - the second pad is can be solved hardly.
Conclusion: Good quality, good workmanship, attractive design but the envelope has to be reworked.