This depends on the situation of my finances. If I have the money to bet on the sport then why should I use a demo and bet on paper that does not yeiled me anything? I would only consider this strategy if I do not have the amount of money to bet on the game.
As far as I know in sportsbetting, the information, skills and knowledge acquired about the competing team will enhance the possibility of winning. So, if I already made the preparations and effort to analyze the possible outcome of the fight, it would be a waste of energy and time if I had the fund but I did not bet a real amount on it.
All these difficulties I experienced could be averted if I simply had a demo to work with properly before actually engaging in it. So I'll go for paper gambling before diving into the real thing.
But the thing is, sportsbetting does not have a pattern since the result is dependent on the performance of the players and the current moral/spirit of the team. One simple change in-game strategy of the competing team can completely change the result, so I think there is no gambling pattern in sportsbetting.